more than ome type of atom, chemically bonded together

more than one type if atom, not chemically bonded together

states that no atoms are made or destroyed during any chamical reaction, so mass of products = mass of reactants

what si the law for the conservation of mass?

separates substances insoluble in a solvent from those that are solubke in the so,vent e.g sand and water

separates a soluble solid from a solvent, e,g salt from salt solution

separates a solvent from soluble solids dissolved in the solvent, e.g sea water is distilled to obtain useable water

a way to separate miscible mixtures of liquid, e.g ethanol and water, ugh condensing the liquid with the lower boiling point in the condenser and then collecting it, in this case, ethanol.

a way to separate substances form mixtures in solution. a way to separate food colourings. refer to required practical.

plum pudding model - electrons scattered in a positive sphere 

fired alpha particles at a thin gold sheet, and some returned back, meaning that there is a small positive charge of the nucleus in the atom.

the atom model of today - a nucleus with energy level aka shells and electrons orbiting the nucleus

what is the relative mass and charge of a proton?

what is the relative mass and charge of a neutron?

relative mass nearly zero or very small, charge -1

what is the relative mass and charge of an electron?

number of protons as well as number of electrons 

total number of particles in the nucleus so protons + neutrons

atoms of the same element but have different amounts of neutrons. different physical properties, but same chemical properties

how many electrons does the first shell occupy?

how many electrons do the rest of the shells occupy?

how is electronic structure written, ex. sodium has 11 electrons

electrons of the outer shell corresponds to the group on the periodic table

what is the correlation between group and electrons on the outermost shell?

called noble gases, are very unreactive due to having a full outer shell.

when atoms of non metallic elements join together by sharing electrons

when metallic elements react within non-metallic elements they produce ionic compounds. the metal atoms lose electrons to form positive ions. the atoms of non-metals gain electrons to form negative ions. the ions have the stable electronic sturicture of a. bike gas. the oppositely charges ions attract each other in the ionic compound, which is called ionic bonding.

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Chemistry

C1 - atomic structure AQA

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